Number of 2 X 2 matrices having entries in {-n,...,0,..,n} and permanent=trace with no entry repeated.

A279018

Number of 2 X 2 matrices having entries in {-n,...,0,..,n} and permanent=trace with no entry repeated.

Terms

    a(0) =0a(1) =0a(2) =8a(3) =24a(4) =56a(5) =100a(6) =156a(7) =236a(8) =320a(9) =408a(10) =540a(11) =692a(12) =844a(13) =1044a(14) =1228a(15) =1368a(16) =1592a(17) =1884a(18) =2180a(19) =2500a(20) =2764a(21) =2996a(22) =3356a(23) =3756a(24) =4080a(25) =4456a(26) =4884a(27) =5276a(28) =5740a(29) =6252

External references